Page 72 - Maths Skills - 8

70 Maths

Activity

Objective: To find the cube of a number by paper folding.

Pre-Requisite Knowledge: 1. Concept of cubes 2. Concept of cube roots

Materials Required: A chart paper, a pair of scissors.
Procedure: 1. Make the student aware of the following points:

(i) Any rectangular piece of paper represents the base.
(ii) The number of times the paper is folded represents the exponent of
the base.

2. To find the cube of 2, take a chart paper and fold it into two equal parts
along the length and then along the width. Again, fold it into two parts
along the length.

3. You have folded the chart paper three times represent the 2 . Unfold it and
3
cut along the folds. How many pieces have you got?
4. To find the cube of 3, take another chart paper and fold it into equal parts
as given in figure.
5. Now fold along the width, dividing it further into three equal
parts.

6. This time fold it along the length, dividing it further
into three equal parts.

7. Now unfold the chart paper and cut with the fold
count all pieces.
Observations:
Equal part Fold time Pieces of paper

2 3 8
3 3 27